Dual-fuel gas turbine test bench

Abstract

The utility model aims to provide a dual-fuel gas turbine test bench, and belongs to the field of gas turbines. Comprising a dual-fuel gas turbine, a dual-fuel supply system, a purging system, a lubricating oil cooling supply system, a load system, a compressed air system, a circulating cooling water system and a discharge system. Wherein the gas fuel supply system comprises a gas fuel front filtering pry and a gas fuel pressure regulating pry; the liquid fuel supply system comprises a liquid fuel transfer supply system and a liquid fuel pressurization and pressure regulation system; the load system comprises a gearbox and a hydraulic dynamometer which can be selectively installed. According to the utility model, different installation test schemes can be selected according to different gas turbines, tests of starting and operating with gas fuel and liquid fuel and mutual switching of different fuels in the operating process can be carried out, and meanwhile, relatively complete emergency treatment measures are provided, so that serious consequences are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a test device, specifically is gas turbine test device. BACKGROUND

[0002] Dual-fuel gas turbine refers to the dual-fuel combustion technology, can use gas and liquid fuel simultaneously, combined with liquid fuel starting quickly, low requirement to peripheral system, fuel transportation is convenient and gas fuel operation cost is low, low emission characteristics.

[0003] At present, all domestic gas turbine test benches are single fuel gas turbine test benches of a single type, do not have complete and perfect various systems, and are difficult to meet the needs of various special tests of various types of dual-fuel gas turbines. SUMMARY

[0004] The utility model discloses a dual-fuel gas turbine test bench which can shorten the test period, reduce the production cost of enterprises and improve the production efficiency of enterprises.

[0005] The utility model discloses a dual-fuel gas turbine test bench which can shorten the test period, reduce the production cost of enterprises and improve the production efficiency of enterprises.

[0006] The utility model discloses a dual-fuel gas turbine test bench, characterized in that: it comprises a dual-fuel gas turbine, a gas fuel supply system, a liquid fuel supply system, a load system and a lubricating oil cooling supply system.

[0007] The utility model discloses a dual-fuel gas turbine test bench, characterized in that: it comprises a dual-fuel gas turbine, a gas fuel supply system, a liquid fuel supply system, a load system and a lubricating oil cooling supply system.

[0008] 1. It also comprises a cleaning and blowing system, and the cleaning and blowing system comprises a high-temperature air guide prop.

[0009] 2. Further comprising compressed air system, compressed air system is connected double fuel gas turbine, high temperature air barge, gas fuel pressure regulating barge respectively.

[0010] 3. Further comprising circulating cooling water system, circulating cooling water system is connected lubricating oil cooling supply system and load system respectively.

[0011] 4. Further comprising blowdown system, blowdown system is connected double fuel gas turbine and liquid fuel supercharging pressure regulating system respectively.

[0012] The utility model has the advantages that: the utility model can use a kind of fuel to run for test alone, also can use double fuel to run for test and can switch at any time.Simultaneously the utility model can carry out various special test to gas turbine, for the performance parameter index of gas turbine, the actual operating state of each component, real-time display can be carried out.

[0013] The utility model has perfect emergency treatment measures and equipment, can monitor in the initial stage of leakage, can take effective fire extinguishing measures in time in the initial stage of fire, to place loss from further expansion. DRAWINGS

[0014] Figure 1 It is structure schematic drawing of the utility model. CONCRETE IMPLEMENTING METHOD

[0015] The utility model will be described in more detail by example in connection with drawings:

[0016] In connection with Figure 1 The utility model double fuel gas turbine test bench includes double fuel gas turbine 1, double fuel supply system, clear blowing system, inlet and exhaust system, fixed and support system, ventilation system, lubricating oil cooling supply system 7, load system 8, control system, electrical system, fire gas system, compressed air system, circulating cooling water system 10, discharge system 11.Double fuel gas turbine 1, load system 8 are connected by bolt and set on fixed and support system, electrical system carries out power supply to each system by electrical cable, control system carries out monitoring and control to each system by communication cable, the rest system is connected by pipeline and carries out medium delivery.

[0017] The dual fuel supply system includes a gaseous fuel supply system and a liquid fuel supply system. The gaseous fuel supply system includes a gaseous fuel filter skid 2, a gaseous fuel pressure regulating skid 3, and a pipeline 12 connecting the gaseous fuel supply system with the dual fuel gas turbine 1. The gaseous fuel filter skid 2 can filter impurities and moisture in the gaseous fuel, and can quickly discharge the gaseous fuel in the skid when needed. The gaseous fuel filter skid 2 can optionally be heated to prevent the formation of a group analysis phenomenon caused by excessively low temperature of the gaseous fuel. The gaseous fuel filter skid 2 includes a cyclone separator, a filter, a moisture separator, and a discharge device, and has an optional heating and insulation device. The gaseous fuel pressure regulating skid 3 can regulate the outlet pressure and flow to meet the starting and operating requirements of the gas turbine, and has the function of emergency shut-off of gaseous fuel and quick discharge of gaseous fuel in the equipment. The gaseous fuel pressure regulating skid 3 includes a starting fuel circuit electromagnetic valve, a parking switch (emergency shut-off valve), a pressure regulating valve, and a discharge device.

[0018] When only gaseous fuel is used, the control system can close the gaseous fuel pipeline valve 17 between the gaseous fuel filter skid 2 and the gaseous fuel pressure regulating skid 3. When only liquid fuel is used, the control system can close the liquid fuel pipeline valve 18 between the liquid fuel transfer supply system 4 and the liquid fuel pressure regulating skid 5. When dual fuel switching is required, the control system can control the switching of the corresponding gaseous fuel pipeline valve 17 and liquid fuel pipeline valve 18, and simultaneously perform pipeline purging of the gaseous fuel pipeline through the high-temperature bleed air skid 6 and the pipeline 14 connecting the high-temperature bleed air skid 6 with the gas turbine 1.

[0019] The purging system includes a high-temperature bleed air skid 6 and a pipeline 14 connecting the high-temperature bleed air skid 6 with the gas turbine 1. The purging system performs pipeline purging of the gas turbine fuel pipeline when the gas turbine switches between gaseous fuel and liquid fuel. The high-temperature bleed air skid 6 draws high-pressure air from the gas turbine compressor bleed air, cools the high-pressure air, and then passes the cooled high-pressure air to the pipeline 14 connecting the high-temperature bleed air skid 6 with the gas turbine 1. The high-temperature bleed air skid 6 can discharge excess gas in the equipment by switching between valves.

[0020] The lubricating oil cooling supply system comprises a lubricating oil station 7, a pipeline 15 between the lubricating oil station 7 and the gas turbine 1, and a pipeline 16 between the lubricating oil station 7 and the load system 8. The lubricating oil station 7 comprises a lubricating oil tank, a lubricating oil process oil pump, a lubricating oil heater, a lubricating oil cooler, a lubricating oil filter, and an oil-gas separator. The lubricating oil in the tank can be heated and supplied to the gas turbine 1 through the pipeline 15 between the lubricating oil station 7 and the gas turbine 1 to meet the starting requirement of the gas turbine. Meanwhile, the oil-gas separation, filtration and cooling of the lubricating oil returned from the gas turbine can meet the operation requirement of the gas turbine 1. Meanwhile, the pipeline 16 between the lubricating oil station 7 and the load system 8 can meet the starting and operation requirements of the load system for lubricating oil supply.

[0021] The load system 8 comprises a selectable gear box and a hydraulic dynamometer system and a coupling 19 connected with the gas turbine 1. The gas turbine 1 transmits torque through the coupling 19 connected between the gas turbine 1 and the load system 8, and the load system can completely absorb the shaft power generated by the gas turbine, and the speed and torque range thereof meet the operation requirement of the gas turbine.

[0022] The control system comprises various sensors, various actuators, a control cabinet and an upper computer. The various sensors at different positions of different systems in the test bench collect the information and operation state of each device to the control cabinet, and can be displayed on the upper computer, and can control various actuators to meet the starting and operation requirements of the gas turbine and each device, and can display the performance parameters of the gas turbine and the operation state of each component in real time according to different sensors, so that the operation personnel can know the state information of the gas turbine in real time.

[0023] The peripheral system comprises a compressed air system 9, a circulating cooling water system 10 and an exhaust system 11. The compressed air system 9 is responsible for supplying compressed air to each facility and device required to include the gas turbine test machine. The circulating cooling water system 10 is responsible for supplying cooling water to the load system 8 and the lubricating oil cooling supply system 7 to meet the cooling requirement of the devices. The exhaust system 11 comprises a gaseous fuel exhaust system and a liquid fuel exhaust system. The gaseous fuel exhaust system can directly exhaust the gaseous fuel in the devices and facilities to the atmosphere or a safe flare through a pipeline provided with a flame arrester.

[0024] The fuel that can be used by the gas fuel supply system includes, but is not limited to, natural gas, biogas, liquefied petroleum gas, hydrogen, etc. The gas fuel supply system includes a gas fuel filter skid 2, a gas fuel pressure regulating skid 3, and a pipeline 12 connected with the gas turbine. The gas fuel filter skid 2 can filter impurities and moisture in the gas fuel, and can quickly discharge the gas fuel in the skid when needed. Optionally, the gas fuel filter skid 2 can be heated to prevent the formation of a group analysis phenomenon caused by too low temperature of the gas fuel. The gas fuel filter skid 2 includes a cyclone separator, a filter, a moisture separator, and a discharge device, and has optional heating and insulation devices. The gas fuel pressure regulating skid 3 can regulate the outlet pressure and flow to meet the starting and running requirements of the gas turbine, and has the functions of emergency shut-off of the gas fuel and quick discharge of the gas fuel in the device. The gas fuel pressure regulating skid 3 includes a starting gas circuit electromagnetic valve, a parking switch (emergency shut-off valve), a pressure regulating valve, and a discharge device.

[0025] The fuel that can be used by the liquid fuel supply system includes, but is not limited to, diesel, kerosene, gasoline, etc. The liquid fuel supply system includes a liquid fuel transfer supply system 4, a liquid fuel pressurizing and pressure regulating system 5, and a pipeline 13 connected with the gas turbine. The liquid fuel transfer supply system 4 includes a transfer tank, a filter, a fuel delivery pump, and a back pressure regulating valve. The liquid fuel transfer supply system 4 can obtain liquid fuel from underground pipelines, tank trucks, and other equipment and facilities, filter the liquid fuel through the filter, pressurize the liquid fuel through the fuel delivery pump, and supply the liquid fuel to the liquid fuel pressurizing and pressure regulating system. The liquid fuel pressurizing and pressure regulating system 5 includes a starting oil circuit electromagnetic valve, an emergency shut-off valve, a plunger type booster pump, a frequency converter, and a discharge device. The frequency converter controls the rotating speed of the plunger type booster pump to regulate the outlet pressure to meet the running requirements of the gas turbine. The starting oil circuit electromagnetic valve meets the starting requirements of the gas turbine. The liquid fuel pressurizing and pressure regulating system 5 has the functions of emergency shut-off of the liquid fuel and discharge of the liquid fuel in the device.

[0026] The purge system includes a high-temperature air skid 6 and a pipeline 14 connected with the gas turbine. The purge system purges the fuel pipeline of the gas turbine when the gas turbine switches between gas fuel and liquid fuel. The high-temperature air skid 6 draws air from the compressor of the gas turbine, cools the high-pressure air through a valve, and then sends the cooled air to the fuel pipeline. The high-temperature air skid 6 can also discharge excess air in the device through valve switching.

[0027] The air intake and exhaust system includes an air intake filter, an air intake pressure stabilizing chamber, an air intake passage, an exhaust passage, an exhaust silencer, and an exhaust treatment device. The air intake and exhaust system can filter, stabilize the pressure of, and meet the cleanliness, pressure stability, and flow requirements of the air entering the gas turbine. The air intake and exhaust system can also reduce the noise of the exhaust gas of the gas turbine and perform post-treatment on the exhaust gas to meet environmental protection requirements.

[0028] The fixing and supporting system includes the base of each device, adjusting gaskets and connecting bolts. The rigidity and inherent frequency requirements of the gas turbine, the optional gear box and the hydraulic dynamometer can be met.

[0029] The ventilation system includes a gas fuel ventilation system and a test bench ventilation system. The gas fuel ventilation system can dilute the leaked gas fuel in the device in time to avoid accidents; the test bench ventilation system can discharge the leaked gas fuel, leaked oil gas and excess fire extinguishing agent of the fire gas system discharged after an emergency to avoid accidents.

[0030] The oil cooling and supply system 7 includes an oil station, a pipeline 15 between the oil station and the gas turbine and a pipeline 16 between the oil station and the load system. The oil station includes an oil tank, an oil process pump, an oil heater, an oil cooler, an oil filter and an oil gas separator. The oil in the oil tank can be heated and supplied to the gas turbine through the pipeline between the oil station and the gas turbine to meet the starting requirement of the gas turbine; meanwhile, the oil returned from the gas turbine can be oil gas separated, filtered and cooled to meet the operation requirement of the gas turbine. Meanwhile, the starting and operation requirements of the load system for oil supply can be met through the pipeline between the oil station and the load system.

[0031] The load system 8 includes an optional gear box, a hydraulic dynamometer system and a coupling connected with the gas turbine. The load system can completely absorb the shaft power generated by the gas turbine, and the speed and torque range thereof meet the operation requirement of the gas turbine.

[0032] The control system includes various sensors, various actuators, a control cabinet and an upper computer. The information and operation state of each device are collected to the control cabinet through various sensors at different positions of different systems in the test bench, and can be displayed on the upper computer. Meanwhile, various actuators can be controlled to meet the starting and operation requirements of the gas turbine and each device. Meanwhile, the performance parameters of the gas turbine and the operation state of each component can be displayed in real time by combining different sensors, so that the operation personnel can know the state information of the gas turbine in real time.

[0033] The electrical system includes a low-voltage switch cabinet and an uninterruptible power supply. The uninterruptible power supply supplies power to the control system, the load system, the oil cooling and supply system and the gas turbine test machine, and can meet the short-time power supply when a power failure occurs. The low-voltage switch cabinet supplies power to other systems, and can meet the capacity requirements of each system.

[0034] The fire protection system includes a halogen alkyl spray system in the gas turbine test rig, a carbon dioxide spray system in the test bed, a flame detection device, a combustible gas detection device, an audible and visual alarm device. When the combustible gas detection device detects combustible gas leakage, it will issue an audible and visual alarm; when the flame detection device detects flame, it will issue an audible and visual alarm and trigger the halogen alkyl spray system in the gas turbine test rig, and the control system will cut off the fuel supply, and after the personnel evacuation is completed, the carbon dioxide spray system in the test bed will be started. After the fire is eliminated, the ventilation system will be started to discharge halogen alkyl and carbon dioxide.

[0035] The peripheral system includes a compressed air system 9, a circulating cooling water system 10 and a discharge system 11. Among them, the compressed air system 9 is responsible for supplying compressed air to each facility and equipment required for compressed air including the gas turbine test rig 1. The circulating cooling water system 10 is responsible for supplying cooling water to the load system 8, the oil cooling supply system 7 to meet the equipment cooling demand. The discharge system 11 includes a gaseous fuel discharge system and a liquid fuel discharge system, and the gaseous fuel discharge system can directly discharge the gaseous fuel in the equipment and facilities to the atmosphere or a safety torch through a pipeline provided with a flame arrester.

Claims

1. A dual-fuel gas turbine test stand characterized by: The system comprises a dual-fuel gas turbine, a gas fuel supply system, a liquid fuel supply system, a load system, a lubricating oil cooling supply system, the gas fuel supply system comprises a gas fuel filter skid and a gas fuel pressure regulating skid, a gas fuel pipeline valve is arranged between the gas fuel filter skid and the gas fuel pressure regulating skid, the gas fuel pressure regulating skid is connected to the dual-fuel gas turbine through a gas pipeline, the liquid fuel supply system comprises a liquid fuel transfer supply system and a liquid fuel pressure regulating system, a liquid fuel pipeline valve is arranged between the liquid fuel transfer supply system and the liquid fuel pressure regulating system, the liquid fuel pressure regulating system is connected to the dual-fuel gas turbine through a liquid pipeline, the load system is connected to the dual-fuel gas turbine through a coupling, and the lubricating oil cooling supply system is connected to the dual-fuel gas turbine and the load system respectively.

2. A dual-fuel gas turbine test stand according to claim 1, characterized in that: The system further comprises a purge system, the purge system comprises a high-temperature bleed air skid, and the high-temperature bleed air skid is connected to the dual-fuel gas turbine through a bleed air pipeline.

3. A dual-fuel gas turbine test stand according to claim 2, characterized in that: The system further comprises a compressed air system, the compressed air system is connected to the dual-fuel gas turbine, the high-temperature bleed air skid and the gas fuel pressure regulating skid respectively.

4. A dual-fuel gas turbine test stand according to claim 1, characterized in that: The system further comprises a circulating cooling water system, the circulating cooling water system is connected to the lubricating oil cooling supply system and the load system respectively.

5. A dual-fuel gas turbine test stand according to claim 1, characterized in that: The system further comprises a blowdown system, the blowdown system is connected to the dual-fuel gas turbine and the liquid fuel pressure regulating system respectively.

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